MUSTELA. 141 



Mustela vison letifera Hollister. 



Mustela vison letifera Hollister, Proc. U. S. Nat. Mus., 44, 1913, 



P- 475- 

 Type locality. Elk River, Minnesota. 



Genl. Char. Like M. v. lacustris, but smaller and paler. 



Color. Reddish mink-brown, paler beneath with white spot on 

 chin and breast; legs and feet slightly darker; tail blackish mink- 

 brown. Ex type in United States National Museum. 



Measurements. Total length, 660. Skull: Total length, 69.3; 

 Occipito-nasal length, 63.6; zygomatic width, 41.5; intertemporal 

 width, 13.2; length of upper molar series, 17.4; length of mandible, 

 42.7; length of lower molar series, 20.5. Ex type in United States 

 National Museum. 



Mustela primulina Jackson. 



Mustela primulina Jacks., Proc. Biol. Soc. Wash., XXVI, 1913, 

 p. 123. 



Type locality. Five miles northeast of A villa, Jasper County, 

 Missouri. 



Genl. Char. Back darker than M. longicauda or M. spadix. 



Color. Upperparts and hind feet Brussels-brown; flanks paler; 

 fore feet and toes white; top of head and face sepia; chin white; 

 underparts primuline-yellow, darkest on throat and middle of belly; 

 anal region Brussels-brown; tail above Brussels-brown, tip black, 

 beneath paler. Ex type in United States National Museum. 



Measurements. Total length, head and body, 248 (skin); tail 

 (incomplete), 89.5; hind foot, 44. Skull, broken: Occipito-nasal 

 length, 46.9; length of nasals, 7.1; length of upper molar series, n.6; 

 length of mandible, 26.6; length of lower molar series, 13.7. Ex type 

 in United States National Museum. 



Mustela campestris Jackson. 



Mustela campestris Jacks., -Proc. Biol. Soc. Wash., XXVI, 1913, 

 p. 124. 



Type locality. Beemer, Nebraska. 



Genl. Char. Similar to, but paler than M. rixosus. Skull narrower 

 behind orbits, and across braincase and palate; bullas flatter. 



Color. Head and upperparts Prout's-brown, darkest on face; 

 toes of both front and hind feet white; tail Prout's-brown, tip black 

 with some \vhite hairs. Ex type in United States National Museum. 



Measurements. Total length, 184; tail, 32; hind foot, 19. Skull: 

 Occipito-nasal length, 30; Hensel, 27.1; zygomatic width, 15; inter- 

 temporal width, 6.2; palatal length, 10.9; length of upper molar series, 



